UPDATE:
His parents said at the press conference that he took his own life and confirmed the body was that of Andrew. The exact cause of death has not been revealed.

AP:
VANCOUVER, British Columbia — Vancouver police say “Growing Pains” actor Andrew Koenig has been found dead. At a press conference in the downtown park where his body was found, police said foul play was not suspected, but would not release a cause of death because the coroner is still investigating.

The actor’s father, Walter Koenig, said his son “took his own life.” Walter Koenig played Pavel Chekov on the original “Star Trek” TV series.

Friends found the body at around noon Thursday in a heavily wooded area about 100 feet (30 meters) from a popular foot path.

Koenig, 41, was visiting friends in Vancouver when he went missing more than a week ago.

The Venice, California, native had a recurring role on the 1980s sitcom as Boner, a pal of star Kirk Cameron’s character, Mike.

tmz.com:

Missing “Growing Pains” star Andrew Koenig emptied out his apartment in Venice, CA because he wanted to start over in Vancouver … this according to a long-time friend.

Lance Miccio tells TMZ he went to Koenig’s apartment last night, and found it cleaned out.